The Dell WM138 Magenta Toner Cartridge (KU055), high yield toner replacement cartridge works as expected. However, by having the higher yield toner, you do not have to purchase the toner as often. This saves on money as well because, although it cost more to purchase the higher yielding toner, it actually cost less in comparison to purchasing two individual toners. And using the higher yielding cartridge does not make a difference in the printer, it is actually the same size.

I love the Dell toner cartridges. They are easy to change in the printer, open the door, take the old cartridge out, put the new cartridge in, close the door and start printing again. No tearing the tape off and shaking and hope you don's get it all over the room before you get it in the printer. They last a long time. I print a lot of colored pictures and don't worry..am I using too much ink..toner is much better then ink jet. I like the Dell Laser Printer much better then ink jet printers I have had in the past.

Again, I am a start up business, and the high cost of these toner cartridges makes them almost cost prohibitive to use. But I truly like the quality. I use toner saver mode on my laser printer except when I print docs that go otd.